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Sample characteristics: Puerto Rico

Census/survey characteristics
Type Census
Title 1970 Census of Population and Housing
Statistical agency U.S. Census Bureau
Population universe Residents of Puerto Rico
De jure or de facto De jure
Census/survey day April 1, 1970
Questionnaire One in five housing units in 1970 received a long form containing supplemental sample questions.
Type of fieldwork Direct and self-enumeration
Microdata sample characteristics
Sample design 1-in-100 national random sample of the population, drawn by the U.S. Census Bureau. Three independent 1 percent public use samples were produced for 1970, each privileging a particular geography: neighborhood, municipio, and "state". IPUMS-International uses the municipio sample.
Sample fraction 1%
Sample size (person records) 27212
Sample weights Self-weighting (expansion factor = 100).
Units identified in microdata
Dwellings No
Vacant units Yes
Households Yes
Collective dwellings Yes
Smallest geography Metropolitan areas and county groups with 250,000+ population
Unit definitions
Households Dwelling places with fewer than five persons unrelated to a household head, excluding institutions and transient quarters.
Collective dwellings Institutions, transient quarters, and dwelling places with five or more persons unrelated to a household head.